Electric furnace.



unipolar electrodes, a charging shaft Sur-- rounding said c lectlodes and having an outward extension, gas discharge means conv nccicd 11o the upper part of Said shaft eX- tcnsion, .thc lower 0nd of said Shaft touching; the top of the charge in the fusion and reaction Zon-e proper and havingv a sectional area smaller than that of the furnace, the said ower ond of the shaft being composed of iron plates lined with a refractory inafcrial.

9. fn an electric furnace with vertical unipolar electrodes, a charging shaft snrronnding said electrodesvand having an Outward extension, gas discharge means connecfed to the uppcr part of Said shafteX- tcnsion, the lower end of said shaft touching the top of the charge in the .fusion and reaction zone proper and havinga sectional arca Smaller than that ofthe furnace, the

' said owcr ond of they shaft being' composed of iron plaies lined with a refractory Inatcrial and cooled with Water. n

In testimony whereof I'have hereunto set my hand in presence of two' subscribing witnesses.

JOHANNES HESS.

fitnesses AUGUST FUGGER,

ADA MARIA BIFRGER. 

